609ae595f0
Add the "arenas.extend" mallctl, so that it is possible to create new
arenas that are outside the set that jemalloc automatically multiplexes
threads onto.
Add the ALLOCM_ARENA() flag for {,r,d}allocm(), so that it is possible
to explicitly allocate from a particular arena.
Add the "opt.dss" mallctl, which controls the default precedence of dss
allocation relative to mmap allocation.
Add the "arena.<i>.dss" mallctl, which makes it possible to set the
default dss precedence on a per arena or global basis.
Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".
Add the "stats.arenas.<i>.dss" mallctl.
67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
#define JEMALLOC_MANGLE
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#include "jemalloc_test.h"
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#define NTHREADS 10
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void *
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je_thread_start(void *arg)
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{
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unsigned thread_ind = (unsigned)(uintptr_t)arg;
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unsigned arena_ind;
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int r;
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void *p;
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size_t rsz, sz;
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sz = sizeof(arena_ind);
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if (mallctl("arenas.extend", &arena_ind, &sz, NULL, 0)
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!= 0) {
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malloc_printf("Error in arenas.extend\n");
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abort();
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}
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if (thread_ind % 4 != 3) {
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size_t mib[3];
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size_t miblen = sizeof(mib) / sizeof(size_t);
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const char *dss_precs[] = {"disabled", "primary", "secondary"};
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const char *dss = dss_precs[thread_ind % 4];
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if (mallctlnametomib("arena.0.dss", mib, &miblen) != 0) {
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malloc_printf("Error in mallctlnametomib()\n");
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abort();
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}
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mib[1] = arena_ind;
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if (mallctlbymib(mib, miblen, NULL, NULL, (void *)&dss,
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sizeof(const char *))) {
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malloc_printf("Error in mallctlbymib()\n");
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abort();
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}
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}
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r = allocm(&p, &rsz, 1, ALLOCM_ARENA(arena_ind));
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if (r != ALLOCM_SUCCESS) {
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malloc_printf("Unexpected allocm() error\n");
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abort();
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}
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return (NULL);
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}
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int
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main(void)
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{
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je_thread_t threads[NTHREADS];
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unsigned i;
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malloc_printf("Test begin\n");
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for (i = 0; i < NTHREADS; i++) {
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je_thread_create(&threads[i], je_thread_start,
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(void *)(uintptr_t)i);
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}
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for (i = 0; i < NTHREADS; i++)
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je_thread_join(threads[i], NULL);
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malloc_printf("Test end\n");
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return (0);
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}
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